- fixes *_unless behavior and set_unless_value_present hack from Chef 12
- simplifies rm_* code
- introduces functional read/write/unlink/exist? API
- deprecates method_missing access to attributes for Chef 13
- deprecates set/set_unless aliases for Chef 14
- removes MultiMash mess that I wrote for Chef 13

https://github.com/chef/chef/pull/5029 for more details

Use with caution. Useful for patching a set of cookbooks on a machine
when iterating during development.

4174 Style/SpaceInsideHashLiteralBraces
1860 Style/SpaceAroundOperators
1336 Style/SpaceInsideBlockBraces
1292 Style/AlignHash
 997 Style/SpaceAfterComma
 860 Style/SpaceAroundEqualsInParameterDefault
 310 Style/EmptyLines
 294 Style/IndentationConsistency
 267 Style/TrailingWhitespace
 238 Style/ExtraSpacing
 212 Style/SpaceBeforeBlockBraces
 166 Style/MultilineOperationIndentation
 144 Style/TrailingBlankLines
 120 Style/EmptyLineBetweenDefs
 101 Style/IndentationWidth
  82 Style/SpaceAroundBlockParameters
  40 Style/EmptyLinesAroundMethodBody
  29 Style/EmptyLinesAroundAccessModifier
   1 Style/RescueEnsureAlignment

Generated via git ls-files | xargs perl -pi -e "s/[Cc]opyright (?:\([Cc]\) )?((?\!$(date +%Y))\\d{4})(-\\d{4})?([, ][ \d]+)*(,|(?= ))/Copyright \\1-$(date +%Y),/g"

This is an entirely mechanically generated (chefstyle -a) change, to go
along with chef/chefstyle#5 . We should pick something and use it
consistently, and my opinion is that double quotes are the appropriate
thing.